Averages, weighted average, simple arithmetic mean problems : Ascent - CAT MBA Entrance classes, study material

Question 4 the day : March 06, 2003
The question for the day is from the topic Averages.

Question
Average cost of 5 apples and 4 mangoes is Rs. 36. The average cost of 7 apples and 8 mangoes is Rs. 48. Find the total cost of 24 apples and 24 mangoes.

1. 1044
2. 2088
3. 720
4. 324

Correct Answer is 2088. Choice (2) is right.

Explanatory Answer

Average cost of 5 apples and 4 mangoes = Rs. 36
Total cost = 36 * 9 = 324

Average cost of 7 apples and 8 mangoes = 48
Total cost = 48 * 15 = 720

Total cost of 12 apples and 12 mangoes = 324 + 720 = 1044
Therefore, cost of 24 apples and 24 mangoes = 1044 * 2 = 2088

Sorted by Subject
Algebra, Arithmetic & Geometric Progressions, Averages and Mean, Clocks and Calendars, Data Sufficiency, English Grammar, Function, Geometry, Interest, Inequality, Mensuration, Mixtures & Alligations, Number System and Theory, Percentages, Permutation & Combination, Pipes & Cisterns And Work & Time, Probability, Profit & Loss, Races, Ratio, Proportion, Set Language and Theory, Speed, Time & Distance, Trigonometry, Miscellaneous, General Knowledge.

Sorted by Date

2003
January 2003, February 2003, March 2003, April 2003, May 2003, June 2003, July 2003, August 2003, September 2003, October 2003, November 2003.

2004
February 2004, March 2004, April 2004, May 2004, June 2004, July 2004, August 2004, November 2004, December 2004.